Locomotive truck



LOCOMOTIVE TRUCK Filed Sept. 18, 1 923 4 Sheets-Sheet 1 m. m a924, LMEW J."G. BLUNT LOCOMOTIVE TRUCK Filed Sept. 18. 1923 4 Sheets-Sheet 2 @m, 21 11.2, a mum J. G. BLUNT LO COMOIIVE TRUCK Filed Sept. 18. 1923 4 Sheets-$heet 5 met; 21 9 m4 I M 57 J. G. BLUNT L0 COMOTIVE TRUCK Filed Sept. 18. 1923 4 Sheets-Shet 4 Patented d. 2 1, 1924.

UNITED STATES JAMES G. IBL'UNT, 0F SCHENECTADY, NEW YORK.

LOCOMOTIVE TRUCK.

Application filed September 18, 1923. Serial No. 663,355.

To all whom it may concern:

Be it known that I, JAMEs G. BLUNna citizen of the United States, residing at Schenectady, in the county of Schenectady and State of New York, have invented a certain new and useful Improvement in Loco -motive Trucks, of which improvement the following is a specification.

My invention relates to four wheel trucks for locomotive engines, and its object is to provide means for readily efiecting the lateral adjustment of the journal bearings, so as to take up the lateral lost motion due to wear of the wheel hub faces and the journal boxes.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings: Figure 1 is a view, the upper half of which is a horizontal section taken in a plane slightly above the side frame members, and the lower half, a plan, ofa locomotive truck embodying my invention; Fig. 2, a side view, in elevation, of the same; Fig. 3, a View, half in end elevation and half in vertical transverse central section; Fig. 4, a vertical axial section through a journal box and lubricant cellar; Fig. 5, a vertical transverse section through the same; Fig. 6, a horizontal section, on the line a a of Fig. 4; Fig. 7, a view, in perspective, of a journal box and the adjoining portion of the connected side frame member; Fig. 8, a similar view of a. lubricant cellar; and, Fig. 9, a horizontal axial section through a journal box and the adjoining portion of the connected side frame member.

In ordinary present practice, wearing plates are usually provided on the inner sides of the wheel hubs or the outer sides of the journal boxes, or on both, to take up the lateral lost motion due to wear of the wheel hub and journal .box faces; and a slight amount of clearance is allowed between these surfaces, when the truck is new. In

continuous service, the wearing surfaces provided, become worn away, and the space between them increased, with the result of increasing the amount'of lateral or side play, until the wearing plates are replaced. My invention renders it possible,'at all times, to adjust the bearing of the journal boxes, by wedges acting sired relation with the wheel hubs, thereby overcoming the inconveniences, and

to maintain them in deavoiding the possibility of damage due to excessive side play.

In the practice of my invention, referring descriptively to the specific embodiment thereof which is herein exemplified in a four wheel locomotive truck of the lateral motion type, the frame of the truck comprises two side members, 1, 1, each of which consists of two vertical plates, shown in this instance as of channel section, which are spaced at such distance apart as to permit the springs 3, and spring hangers, 3*, to be located between them, and are connected by top walls, 1, extending sufliciently inwardly from their ends to surround the spring hangers. Journal boxes, 2, are formed integrally with the side frame members, 1, 1, at each of the ends thereof, in which journal boxes, the axles, 4;, on which the truck wheels, 5, are secured, are journalled to rotate.

A truck bolster, 6, which is substantially in the form of a plate, having upwardly and downwardly extending flanges, is supported on the springs, 3, and 1s provided with means for the attachment of a brake hanger,- for each of the wheels and a brake cylinder bracket. The truck bolster is recessed at each of its corners, for the reception of wedging devices hereinafter described, and supports the swing bolster, 7, and centering rollers, 8, which members do not form part of my present invention and therefore will not be, in detail, herein set forth.

The journal boxes, 2, which, as before stated, are formed integrally with the side frame members, 1, are provided, on their outer faces, with wearing plates, 9, adapted to bear on the'inner faces of the hubs of the truck wheels, 5. The journal bearings, 2 which are fitted in the journal boxes, 2, are substantially similar to those in present practice, and, inasmuch as each side of the-truck is a rigid structure, of which the journal boxes are components, provisionis made for compensating the rising and falling of one nected side frame members, 2*,

ners, which are engaged by lugs, 2, on the journal box. To further ensure, against displacement of the journal box wedge, it is conneoted to the journal box, with the capacity of relative rocking movement, by a tubular stud, 2 which is screwed into the journal box, said stud being provided with a collar, 2, which fits in a shouldered opening on the wedge. The wedge is thereby prevented from dropping out when the truck is .jacked up, as when replacing a worn brass, and the tubular stud also serves to convey oil to the journal, from an oil cup, 2, on the top of the journal box, which oil cup also forms a lock nut for the stud.

Inwardly extending vertical flanges, 1 are formed on the side frame members, 1, at their junctions with the driving boxes, 2, as most clearly indicated in Figs. 7 and 9, and a rectangular recess, 6, is formed at each corner of the truck bolster, 6, the spaces between the transversely extending faces of the truck bolster recesses and the parallel inner faces of the side member flanges, 1", serving for the reception of wedge devices of the following construction. A fixed wedge, 10, is secured by upper bolts 10, and lower bolts, 10', to each side 0 the truck bolster, 6, at each end thereof, said wedges fitting in the corner recesses, 6 of the bolster. An adjusting wedge, 11, is interposed between each of the fixed wedges,'10, and the inner end of the adjacent journal box, 2, said adjusting wedge having a recess, 11, in its bottom, which fits freely over the lower bolt, 10", of the fixed wedge, 10. The adjusting wedges are drawn to a bearing on the bolster and on the journal boxes and conby adjusting bolts, 12, having rounded heads, 12, engaging recesses extending through the adjusting wedges, and threaded, at and adjacent to their upper ends, for engagement by nuts, 12, bearing on the truck bolster, 6.

The effect of draft upon the adjusting wedges is to cause them to slide on the fixed wedges, 10, and to move the connected journal boxes outwardly towards the wheel hubs. In the event of breakage of an adjusting bolt, the accompanying adjusting wedge could fall only far enough to rest and be suspended on the lower bolt, 16*, and there would be no interference with the operation of the truck. The operation of the wedges, when assembled in the spaces provided between the ournal boxes and the truckloolster, correspon s with the action of the ordinary truck journal box in its pedestal. It will also be noted that the motion of the truck is transferred, through the wedges, 12, from the truck frame to the truck bolster. The

front and back faces ,of said wedges are beveled, to allow for the rise and fall of the journal boxes, due to uneven track, with respect to the truck bolster.

The lubricant cellars, 13, are fitted in the journal boxes in the usual position, and are held in place by transverse bolts, 14, and nuts, 14. They are applied from the inside, and are slid into place on guides, 2 on the ]Oll1'- nal boxes which fit under longitudinal recesses, 13, on the cellars. Lubricant is supplied to the cellars through openings, 2", in the sides of the journal boxes, facing the ends of the truck. which openings are closed by hinged doors, 15, normally maintained in closed position by springs, 16, as in journal box lids commonly applied in the journal boxes of freight cars. Mouths, 13", formed on the cellars, project outwardly into swells on the open sides of the journal boxes, which are suitably recessed to receive them.

I claim as my invention and desire to secure by Letters Patent:

1. In a locomotive truck of the four wheel type, the combination of two side frame members, each having journal boxes fixed on its ends; a truck bolster; and means for effecting lateral adjustment of the side frame members, relatively to the bolster.

2. In a locomotive truck of the four wheel type, the combination of two side frame members, each having journal boxes fixed on its ends; a truck bolster, having end bearing faces on each of its sides; and means, interposed between said bearing faces and the side frame members, for effecting lateral adjustment of the side frame members, relatively to the bolster.

3. In a locomotive truck of the four wheel type, the combination of two side frame members, each having journal boxes fixed on its ends; a truck bolster, having end recesses on each of its sides; and means, fitted in said recesses, for effecting lateral adjustment of the side frame members, relatively to the bolster.

4. In a locomotive truck of the four wheel type, the combination of two side frame members, each having journal boxes fixed on its ends; a truck bolster, having end bearing faces on each of its sides; and wedges, interposed between, and bearing on, said bearing faces and the side frame members, and operable to effect lateral adjustment of the side frame members, relatively to the bolster.

5. .In a locomotive truck of the four wheel type, the combination of two side frame members, each having journal boxes fixed on its ends, and inwardl extending flanges, adjoining said journal oxcs; a truck bolster, having end recesses on each of its sides; and wedges, fitted in the end recesses of the bolster, between the transversely extending faces thereof and the flanges of the side frame members, and operable to effect lateral adjustment of the side frame members, relatively to the bolster.

6. In a locomotive truck of the four wheel type, the combination of two side frame members each having journal boxes fixed on its ends; a truck bolster; fixed wedges, secured to said bolster; adjusting wedges, bearing on said fixed Wedges and onthe side frame members; adjusting bolts, connected to the adjusting wedges; and nuts, engaging said bolts and bearing on the truck bolster.

- 7. In a locomotive truck of the four wheel type, the combination of two side frame members, each having journal boxes fixed on its ends; a truck bolster; fixed wedges,

located at the four corners of said bolster; upper and lower bolts securing said wedges to the bolster; adjusting wedges, bearing on the fixed wedges and on the side frame members, and having bottom recesses, fitting oVer the lower bolts of the fixed wedges; adjusting bolts, connected to the adjusting wedges; and nuts, engaging said bolts and bearing on the truck bolster.

JAMES G. BLUNT.

t Witnesses:

J. HowARb WAGAR, RUTH REUTLING. 

